CN218326324U

CN218326324U - Upper assembling type high-temperature steam ball valve with novel sealing structure for ship

Info

Publication number: CN218326324U
Application number: CN202222332842.XU
Authority: CN
Inventors: 卫勇; 杨飞; 张坤万; 陈志杰; 明振涛
Original assignee: Special Equipment Co ltd Csic
Current assignee: Special Equipment Co ltd Csic
Priority date: 2022-09-02
Filing date: 2022-09-02
Publication date: 2023-01-17
Anticipated expiration: 2032-09-02

Abstract

The utility model provides a marine novel seal structure's facial make-up formula high temperature steam ball valve belongs to valve technical field. This upper assembling type high-temperature steam ball valve, which comprises a valve body, the top flange joint of valve body has the valve gap, the top flange joint of valve gap has the support, the top flange joint of support has electric actuator, the inside of valve body is provided with the valve ball, the fixed top of valve body is provided with pushes away the dish, the fixed bottom of valve ball is provided with down the opening dish, it is connected with electric actuator's output to go up the valve rod, it has set gradually the packing pad to go up to set up between valve rod and the valve gap, packing and packing ring, the top of packing ring is provided with gland, the outside of going up the valve rod is located to the gland cover, and be provided with the bearing between gland and the last valve rod, the bottom of pushing down the opening dish is passed through lower valve rod and valve gap rotation connection, the both sides of valve ball are provided with the sealing member respectively, the effect that can be applied to the pipeline in ship high-temperature steam system return circuit has been reached.

Description

Upper-mounted high-temperature steam ball valve with novel sealing structure for ship

Technical Field

The utility model relates to the technical field of valves, particularly, relate to a marine novel seal structure's facial make-up formula high temperature steam ball valve.

Background

The ball valve is widely applied to various important pipelines in process control and the like in various industrial fields such as electric power, petrochemical industry, metallurgical steel making, water treatment, natural gas exploitation, offshore platforms and the like due to excellent performance, but the existing ball valve can only be applied to occasions with low requirements on normal temperature, low pressure and tightness, steam in a pipeline of a high-temperature steam system loop on a ship has the characteristics of high temperature and high pressure, meanwhile, the pipeline of the high-temperature steam system loop on the ship has strict requirements on the sealing performance of the valve, and the sealing performance of the existing ball valve cannot meet the pipeline of the high-temperature steam system loop on the ship to execute the on-off function of air flow in the pipeline, so that the control on fluid is realized.

SUMMERY OF THE UTILITY MODEL

In order to compensate the above deficiency, the utility model provides a marine novel seal structure's facial make-up formula high temperature steam ball valve for solve the problem that current ball valve can not be applied to the pipeline in high temperature steam system return circuit.

The utility model discloses a realize like this:

the utility model provides a marine novel seal structure's facial make-up formula high temperature steam ball valve, includes the valve body, the top flange joint of valve body has the valve gap, the top flange joint of valve gap has the support, the top flange joint of support has electric actuator, the inside of valve body is provided with the valve ball, the fixed top that is provided with of valve ball pushes up the dish, push up the dish with the valve gap rotates to be connected, the fixed bottom that is provided with of valve ball pushes down the dish, the top that pushes up the dish is connected with the one end of last valve rod, the other end of going up the valve rod link up in proper order the valve gap with the support with electric actuator's output is connected, go up the valve rod with be provided with the clearance between the valve gap, inside gasket, filler and the packing ring of having set gradually from bottom to top in this clearance, the top of packing ring is provided with gland, the packing gland cover is located the outside of going up the valve rod, just the packing gland with be provided with the bearing between the last valve rod, the packing gland with valve gap flange joint, the bottom of lower dish is connected down, the other end of valve rod with the valve rod rotates the connection, the both sides of valve ball be provided with respectively push up the contact of valve disk, push up the sealing member and push up the dish.

In an embodiment of the present invention, the valve body and the valve cover are provided with a metal winding pad.

The utility model discloses an in an embodiment, the sealing member includes disk seat, spring-supported ring, leaf spring, diaphragm clamping ring and tight ring, the spring-supported ring with the disk seat set gradually in the inside of valve body, the leaf spring set up in the spring-supported ring with between the valve body, the spring-supported ring is close to the one end of disk seat peg graft in the inside of disk seat, just the diaphragm set up in the spring-supported ring with between the disk seat, the diaphragm clamping ring set up in one side of diaphragm, tight ring set up in one side of diaphragm clamping ring, the disk seat with the surface contact of valve ball.

The utility model discloses an in an embodiment, the sealing member still including dividing ring, roller bearing clamping ring and roller bearing, divide the ring set up in the surface of disk seat, divide the ring inboard with the outside joint of disk seat, the roller bearing clamping ring set up in divide one side of ring, the roller bearing clamping ring pass through the bolt with the valve body is connected, the roller bearing set up in be close to on the roller bearing clamping ring go up push away the dish with one side of push away the dish down, the roller bearing with the roller bearing clamping ring rotates to be connected, the side of roller bearing respectively with go up push away the dish with the side contact of push away the dish down.

In an embodiment of the present invention, the bolt is provided with a gap at the joint of the roller pressing ring.

In an embodiment of the present invention, the side of the push-up tray is provided with four first wedge surfaces, and the first wedge surfaces are equidistantly distributed on the side of the push-up tray.

In an embodiment of the present invention, the side of the lower tray is provided with four second wedge surfaces, which are equidistantly distributed on the side of the lower tray, and the first wedge surface and the second wedge surface are arranged in a mirror image.

In an embodiment of the present invention, the filler is a V-shaped filler, and the filler pad is a belleville spring washer.

In an embodiment of the present invention, the diaphragm is a metal diaphragm.

In an embodiment of the present invention, the bearing is a non-metal bearing.

The utility model has the advantages that:

1. in the process of driving the valve ball to rotate by the upper valve rod, the bearing arranged outside the upper valve rod adopts a non-metal bearing, so that the phenomenon that the upper valve rod is locked due to expansion caused by high temperature of steam is avoided, and the effect of using the valve ball in a high-temperature steam environment is realized.

2. Under the effect of leaf spring and spring support circle, the disk seat remains closely the laminating throughout with the contact surface of valve ball, and at the in-process that lets in high temperature high pressure steam, the disk seat that keeps closely the laminating with the valve ball seals the valve ball, and the diaphragm seals valve body passageway department, combines to pack to adopt the packing pad to carry out spring loading to packing, the leakproofness between valve rod and the valve gap in the reinforcing reaches the effect of avoiding high temperature high pressure steam to leak outside.

3. When the valve ball opens the passage ports on the two sides of the valve body, the roller is respectively contacted with the first wedge surface of the upper push-open disc and the second wedge surface of the lower push-open disc, the first wedge surface and the second wedge surface are both planes, the force of the valve seats on the two sides of the valve ball attached to the valve ball is increased under the action of the plate spring at the moment, the valve ball is sealed, in the process of closing the passages on the two sides of the valve body opened by the valve ball, the upper valve rod drives the valve ball to rotate, the first wedge surface of the upper push-open disc and the second wedge surface of the lower push-open disc extrude the roller to enable the valve seats to move in the direction away from the valve ball, the force of the valve seats on the two sides of the valve ball attached to the valve ball is reduced under the action of the plate spring at the moment, but the valve ball is still attached to the valve seats to seal the valve ball, the abrasion between the valve ball and the valve seats is reduced, and the sealing performance when the passage ports on the two sides of the valve body are opened by the valve ball is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural view of a top-mounted high-temperature steam ball valve of a novel sealing structure for a ship according to an embodiment of the present invention;

fig. 2 is a schematic sectional structural view of the upper-mounted high-temperature steam ball valve with the electric actuator removed, in accordance with the novel sealing structure for ships provided in the embodiment of the present invention;

FIG. 3 is an enlarged schematic view of the structure at A in FIG. 2;

FIG. 4 is an enlarged view of the structure at B in FIG. 2;

fig. 5 is a schematic view of a position relationship structure of the upper push-open plate, the lower push-open plate and the roller according to the embodiment of the present invention.

In the figure: 1. a valve body; 2. a valve cover; 3. a support; 4. a valve ball; 5. an upper valve stem; 6. pushing up the opening disc; 61. a first wedge surface; 7. pushing the tray downwards; 71. a second wedge surface; 8. a lower valve stem; 9. a packing gland; 10. packing and pressing a ring; 11. a filler; 12. a filler pad; 13. a seal member; 131. a valve seat; 132. a spring support ring; 133. a plate spring; 134. a membrane; 135. pressing a membrane ring; 136. a fastening ring; 137. opening the ring; 138. a roller is pressed into a ring; 139. a roller; 14. an electric actuator; 15. a metal wrap pad; 16. and a bearing.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: a top-mounted high-temperature steam ball valve with a novel sealing structure for ships comprises a valve body 1, a valve cover 2 is connected to the top flange of the valve body 1, a support 3 is connected to the top flange of the valve cover 2, an electric actuator 14 is connected to the top flange of the support 3, a valve ball 4 is arranged inside the valve body 1, a top push-open disc 6 is fixedly arranged on the top of the valve ball 4, the top push-open disc 6 is rotatably connected with the valve cover 2, a bottom push-open disc 7 is fixedly arranged on the bottom of the valve ball 4, the top of the top push-open disc 6 is connected with one end of an upper valve rod 5, the other end of the upper valve rod 5 sequentially penetrates through the valve cover 2 and the support 3 to be connected with the output end of the electric actuator 14, a gap is arranged between the upper valve rod 5 and the valve cover 2, a packing pad 12, a packing 11 and a packing press ring 10 are sequentially arranged inside the gap from bottom to top, the packing 11 is a V-shaped packing, the packing pad 12 is a belleville spring washer, the top of the packing ring 10 is provided with a packing gland 9, the packing gland 9 is sleeved outside the upper valve rod 5, a bearing 16 is arranged between the packing gland 9 and the upper valve rod 5, the bearing 16 is a non-metal bearing 16, and compared with an existing ball valve adopting the metal bearing 16, the ball valve is used for preventing the upper valve rod 5 from being locked due to expansion of the metal bearing 16 at high temperature and preventing function failure due to incapability of rotating, the packing gland 9 is connected with the valve cover 2 in a flange mode, the bottom of the opening disc 7 is connected with one end of the lower valve rod 8, the other end of the lower valve rod 8 is connected with the valve cover 2 in a rotating mode, sealing elements 13 are arranged on two sides of the valve ball 4 respectively, and the sealing elements 13 are in contact with the surfaces of the upper opening disc 6, the lower opening disc 7 and the valve ball 4 respectively.

It should be noted that, the valve body 1 and the bonnet 2 are provided with the metal winding pad 15, the metal winding pad 15 is used for enhancing the sealing between the valve body 1 and the bonnet 2, the electric actuator 14 is an action actuator of the ball valve and is used for driving the upper valve rod 5 of the ball valve to rotate 90 degrees in a reciprocating manner to open and close the ball valve, the electric actuator is a technology disclosed in the prior art, specific working principles are not described herein any more, the valve body 1, the bonnet 2 and the support 3 are forged pieces, the valve ball 4 is sprayed with 06Cr18Ni11Ti CrC, the valve seat 131 is sprayed with 06Cr18Ni11Ti and welded with Ni60, both sealing surface materials are high temperature resistant and high scratch resistant, the service life of a sealing surface of the upper mounting type high temperature steam ball valve is prolonged, the service life of a sealing surface of the upper mounting type high temperature steam ball valve is ensured, meanwhile, the upper end of the ball 4 is connected by the upper valve bonnet 2 through the upper disc 6 and then is pushed away from a fixed position, the upper valve rod 5 only bears torque of the upper valve rod 5 driven by the electric actuator 14 to rotate, the upper valve rod 5 is used for improving the stress condition of the upper valve rod 5 and improving the reliability of the bonnet mounting type high temperature steam ball valve, the upper mounting type ball valve, the packing 11 seals the upper valve, and is used for enhancing the sealing pad 12, and for enhancing the sealing between the upper valve rod 5 and the elastic packing 2.

Referring to fig. 1-5, the sealing member 13 includes a valve seat 131, a spring support ring 132, a plate spring 133, a diaphragm 134, a diaphragm pressing ring 135 and a tightening ring 136, the spring support ring 132 and the valve seat 131 are sequentially disposed inside the valve body 1, the plate spring 133 is disposed between the spring support ring 132 and the valve body 1, one end of the spring support ring 132 close to the valve seat 131 is inserted into the valve seat 131, the diaphragm 134 is disposed between the spring support ring 132 and the valve seat 131, the diaphragm pressing ring 135 is disposed on one side of the diaphragm 134, the tightening ring 136 is disposed on one side of the diaphragm pressing ring 135, the valve seat 131 contacts with the surface of the valve ball 4, the sealing member 13 further includes a split ring 137, a roller pressing ring 138 and a roller 139, the split ring 137 is disposed on the surface of the valve seat 131, the inner side of the split ring 137 is engaged with the outer side of the valve seat 131, the roller 138 is disposed on one side of the split ring 137, the roller pressing ring 138 is connected to the valve body 1 through a bolt, the roller 139 is disposed on one side of the pressing roller 138 close to the upper push-open disc 6 and the lower push disc 7, the side of the roller pressing ring 139 is connected to the push-open disc 6 and the side of the lower push disc 7, respectively.

It should be noted that the diaphragm 134 is a metal diaphragm 134, and has the effects of no leakage and long service life and stable sealing compared with the flexible graphite sealing adopted by the existing ball valve, and is used for ensuring the sealing effect at the radial position of the valve ball 4, the side surface of the upper push-open disk 6 is provided with four first wedge surfaces 61, the number of the first wedge surfaces 61 is four, the first wedge surfaces are distributed on the side surface of the upper push-open disk 6 at equal intervals, the side surface of the lower push-open disk 7 is provided with four second wedge surfaces 71, the number of the second wedge surfaces 71 is four, the first wedge surfaces 61 and the second wedge surfaces 71 are distributed on the side surface of the lower push-open disk 7 at equal intervals, the upper push-open disk 6 and the lower push-open disk 7 are arranged in a mirror image, the first wedge surfaces 61 and the second wedge surfaces 71 are arranged in a mirror image, and then after the valve body 1 and the pipeline of the high-temperature steam system loop on the ship are connected through a flange, the high-temperature steam system loop on the ship enters the inside of the large valve body 1, the diaphragm 134 seals the channel opening of the valve body 1, and at the same time, the spring support ring 132 pushes the valve seat 131 to move towards the valve ball 4, so that the valve seat 131 is in tight contact with the valve ball 4 to realize the tight sealing.

Referring to fig. 1-3, the joint of the bolt and the roller pressing ring 138 is provided with a gap for allowing the roller pressing ring 138, the split ring 137 and the valve seat 131 to move slightly along the radial direction of the valve ball 4.

Specifically, this marine novel seal structure's upper assembling formula high temperature steam ball valve's theory of operation: in the process that the upper valve rod 5 drives the valve ball 4 to rotate, the bearing 16 arranged outside the upper valve rod 5 adopts the non-metallic bearing 16, the phenomenon that the upper valve rod 5 is locked due to expansion caused by high temperature of steam is avoided, the effect of using under the high temperature steam environment is realized, under the action of the plate spring 133 and the spring support ring 132, the contact surface of the valve seat 131 and the valve ball 4 is always kept in close fit, in the process of introducing high-temperature and high-pressure steam, the valve seat 131 tightly attached to the valve ball 4 seals the valve ball 4, the diaphragm 134 seals the passage opening of the valve body 1, and the filler 11 is combined, and the packing pad 12 is adopted to elastically load the packing 11, the sealing performance between the upper valve rod 5 and the valve cover 2 is enhanced, the effect of preventing high-temperature and high-pressure steam from leaking to the outside is achieved, when the valve ball 4 opens the passage ports on both sides of the valve body 1, the roller 139 contacts with the first wedge surface 61 of the upper push-open disk 6 and the second wedge surface 71 of the lower push-open disk 7, the first wedge surface 61 and the second wedge surface 71 are both flat surfaces, at this time, the force of the valve seat 131 on both sides of the valve ball 4 attaching to the valve ball 4 is increased under the action of the plate spring 133, the valve ball 4 is sealed, in the process that the valve ball 4 opens and closes the channels on the two sides of the valve body 1, the upper valve rod 5 drives the valve ball 4 to rotate, at the moment, the first wedge surface 61 of the upper push-open disc 6 and the second wedge surface 71 of the lower push-open disc 7 extrude the roller 139 to enable the valve seat 131 to move towards the direction far away from the valve ball 4, at the moment, the joint force of the valve seats 131 on the two sides of the valve ball 4 and the valve ball 4 is reduced under the action of the plate spring 133, but the valve ball 4 is still jointed with the valve seat 131 to seal the valve ball 4, the valve ball 4 and the valve seat 131 are used for reducing abrasion between the valve ball 4 and the valve seat 131, the sealing performance when the valve ball 4 opens the passage openings on the two sides of the valve body 1 is improved, and the effect that the valve ball can be applied to a pipeline of a high-temperature steam system loop is achieved.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a marine new seal structure's facial make-up formula high temperature steam ball valve which characterized in that: comprises a valve body (1), a valve cover (2) is connected to the top flange of the valve body (1), a support (3) is connected to the top flange of the valve cover (2), an electric actuator (14) is connected to the top flange of the support (3), a valve ball (4) is arranged in the valve body (1), a push-open disc (6) is fixedly arranged at the top of the valve ball (4), the push-open disc (6) is rotatably connected with the valve cover (2), a push-open disc (7) is fixedly arranged at the bottom of the valve ball (4), the top of the push-open disc (6) is connected with one end of an upper valve rod (5), the other end of the upper valve rod (5) sequentially penetrates through the valve cover (2) and the support (3) and is connected with the output end of the electric actuator (14), a gap is arranged between the upper valve rod (5) and the valve cover (2), a packing pad (12), a packing (11) and a packing ring (10) are sequentially arranged in the gap, a packing gland (9) is sleeved on the top of the packing ring (10), and a bearing 16 is arranged between the valve rod (5) and the packing gland (5), the bottom of the lower push-open disc (7) is connected with one end of a lower valve rod (8), the other end of the lower valve rod (8) is rotatably connected with the valve cover (2), sealing elements (13) are respectively arranged on two sides of the valve ball (4), and the sealing elements (13) are respectively in contact with the surfaces of the upper push-open disc (6), the lower push-open disc (7) and the valve ball (4).

2. The upper-mounted high-temperature steam ball valve with the novel sealing structure for the ship is characterized in that the valve body (1) and the valve cover (2) are provided with metal winding pads (15).

3. The upper-mounted high-temperature steam ball valve with the novel sealing structure for the ship according to claim 1, wherein the sealing member (13) comprises a valve seat (131), a spring support ring (132), a plate spring (133), a diaphragm (134), a diaphragm pressing ring (135) and a fastening ring (136), the spring support ring (132) and the valve seat (131) are sequentially arranged inside the valve body (1), the plate spring (133) is arranged between the spring support ring (132) and the valve body (1), one end of the spring support ring (132) close to the valve seat (131) is inserted into the valve seat (131), the diaphragm (134) is arranged between the spring support ring (132) and the valve seat (131), the diaphragm pressing ring (135) is arranged on one side of the diaphragm (134), the fastening ring (136) is arranged on one side of the diaphragm (135), and the valve seat (131) is in contact with a surface of the valve ball (4).

4. The upper-mounted high-temperature steam ball valve with the novel sealing structure for the ship according to claim 3, wherein the sealing member (13) further comprises a split ring (137), a roller pressing ring (138) and rollers (139), the split ring (137) is arranged on the surface of the valve seat (131), the inner side of the split ring (137) is clamped with the outer side of the valve seat (131), the roller pressing ring (138) is arranged on one side of the split ring (137), the roller pressing ring (138) is connected with the valve body (1) through bolts, the rollers (139) are arranged on the roller pressing ring (138) and close to one side of the upper push-open disc (6) and one side of the lower push-open disc (7), the rollers (139) are rotatably connected with the roller pressing ring (138), and the side surfaces of the rollers (139) are respectively in contact with the side surfaces of the upper push-open disc (6) and the lower push-open disc (7).

5. The upper-mounted high-temperature steam ball valve with the novel marine sealing structure is characterized in that a gap is formed at the joint of the bolt and the roller pressing ring (138).

6. The upper-mounted high-temperature steam ball valve with the novel marine sealing structure according to claim 4, wherein the side surface of the upper push-away plate (6) is provided with four first wedge surfaces (61), and the first wedge surfaces (61) are distributed on the side surface of the upper push-away plate (6) at equal intervals.

7. The upper-mounted high-temperature steam ball valve with the novel sealing structure for the ship according to claim 6, wherein the side surface of the lower opening plate (7) is provided with second wedge surfaces (71), the number of the second wedge surfaces (71) is four, the second wedge surfaces are distributed on the side surface of the lower opening plate (7) at equal intervals, and the first wedge surfaces (61) and the second wedge surfaces (71) are arranged in a mirror image manner.

8. The top-loading high-temperature steam ball valve with the novel sealing structure for the ship according to claim 1, characterized in that the packing (11) is a V-shaped packing, and the packing pad (12) is a belleville spring washer.

9. The upper-mounted high-temperature steam ball valve with the novel sealing structure for the ship as claimed in claim 3, wherein the diaphragm (134) is a metal diaphragm (134).

10. The upper-mounted high-temperature steam ball valve with the novel sealing structure for the ship according to claim 1, characterized in that the bearing (16) is a non-metal bearing (16).